His first novel, Hank Thompson's Blues, was published by Nobody Rocks Press in May 2009. His nonfiction book The New Blue Media: How Michael Moore, MoveOn.org, Jon Stewart and Company Are Transforming Progressive Politics was published in May 2008 by the New Press. His first nonfiction work, Rebel and a Cause, about the 1960 execution of San Quentin death row author Caryl Chessman, was published by the University of California Press in 2001.
Hamm is co-editor (with Williams Cole) of Pieces of a Decade: Brooklyn Rail Nonfiction 2000-2010. And he is a member of the Brooklyn Literary Council, which organizes the Brooklyn Book Festival.